Rivet



(No Model.)

. Gr. PLATT.` RIVET.

No. 446,466. l 664611666 F66. 17, 1691.

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ll'niTnn STaTns lMTnivT @Tirion IRVING G. PLATT, Ol? XVATERBURY,CONNECTICUT.

RIVET.

SPECIFICATION forming part of Letters Patent No. 446,466, dated February17', 1891. Application led October 80, 1890. Serial No. 369,796.A (Nomodel.)

To all whom, it may concern.-

Be it known that I, IRVING G. PLATT, a citizen of the United States, anda resident of ll'vaterbury, in the county ot New Haven and State ofConnecticut, have invented certain new and useful Improvements inRivets, of which the following is a specilication.

My invention relates to an improved tack or rivet, and more particularlyto that kind or class thereof used in connection with a metal washer,button, disk, or other device, the object of the same being to soconstruct an article of this kind that a certain and delinite amount ofstock shallalways be provided at one end of the rivet and beyond saidmetal disk or washer for forming the head or upsetupon such end of therivet; or,in other words, to so construct the rivet that the head orupset on the end thereof will always be of one certain size, therebyallowing of the use of one certain-sized tool for upsetting' such end,and this withoutreterence to the thickness of the metal, fabric, orother material through whiclrthe rivet is passed.

lith these ends in view rnyinvention consists of a metal rivet madeeither solid or hollow and tapering to be used in connection with ametal washer, disk, button, or other device provided with a hole oropening for the entrance of such rivet and ot` a diameter largerthanthat of the smaller end of the rivet and smaller than the lower orflanged end ot' the rivet.

My invention further consists of a metal` rivet made either holloworsolid and flanged at one end, the shank thereof being made more or lesstapering' and provided with a shoulder or seat for the metal washer,button, disk, or other device in connection with which the rivet may beused.

My invention further consists in certain novel features of constructionhereinafter fully described, and specifically pointed out in the claims.

In the accompanying drawings, Figure 1 is a view in elevation ot' arivet constructed in accordance with my invention. Fig. 2 is a view insection ot' a hollow rivet made in accordance with my invention. Fig. 3is a view in elevation of my improved form of rivet,

showing a washer, button, or disk placed thereon prior to the upsettingot the rivet.

Fig. t is a view in section of the solid rivet after being upset. Fig. 5is a modified form of hollow rivet having abutton, disk, or otherarticle applied thereto prior to the upsetting ot' the end.

Ileretofore a great disadvantage has been encountered in using rivets asordinarily constructed, in that the size of the head or upset hasinvariably depended upon the thickness or amount ot material throughwhich the rivet or tack is forced, thus requiring the use otdifferent-sized tools for forming such upset or head. To overcome ths Iconstruct a rivet with the shank A, provided at one end with the flangeB, the shank A being made hollow or solid, as desired, and in accordancewith the material through which the rivet is to be passed, as in somecases for heavy work, it might he desired to have the rivet made solid,and in light work it might be more desirable to have the rivetstrong,butat the same time light, in which case I prefer to use it in its hollowform. This shank A,itwill be seen, is more or less tapered both in thehollow and solid form, the piercing end being smaller in diameter thanthe flanged end. In order to secure a certain amount of metal above thewasher, button-body, or disk C, I form on the shank a shoulder a, whichforms a seating for said disk or plate, the metal or stock contained inthe shank above said disk C being swaged or upset to form the head D. Itis obvious, of course, that this shoulder a may be formed at anypointupon the tapering shank, its location depending upon the size of thehead or upset or the amount of stock which shall be utilized in formingthe same. This shoulder, it will be understood, allows the shank of therivet to pass through the opening in t-he disk, plate, button-body, orwasher to a certain distance-t-hat is, until the latter strikes theshoulder--and this without reference to the thickness of the material E,through which the rivet is passed, it being understood, of course, thatthe length ot the shank between the shoulder a and the flange B` shallbe greater or at least equal to the thickness of the thickest materialin connection with which it will be desired to use the rivet. This formof rivet, it will be seen, may be used with plates, buttons, washers,disks, or other articles secured on or by said rivet having IOOdifferentsizcd openings; but where the article or articles to be securedon or by said rivet have approximately the same-sized opening thereinfor the entrance of the rivet, I may, if preferred, omit the shoulder aand construct the rivet with the hollow shoulder slightly more tapering,such taper depending to a great extent upon the size of the opening inthe article to be secured on or by said rivet and the amount of metalwhich it is desired shall be utilized,'the slighter the taper and theless amount of metal to be utilized the greater the taper, and this forthe purpose of allowing` the shank to pass through the opening in thearticle to a certain distance, as shown in Fig. 5, that space betweenthe article C and the ange B being iilled or partially illed by thematerial or stock E.

In practice the rivet is first forced through the material E, and thearticle C then placed in position upon the shank, or, where foundconvenient, the rivet may be passed through the material and through theopening in the article C at one and the same time. By means of asuitable tool (not shown) the rivet is then swaged, forming a head orupset D of a certain size. A second shoulder F is also formedsimultaneously, securely clamping the cloth between the article C andange B, the size thereof depending upon the thickness and character ofthe material E.'

My invention is exceedingly simple, and by reason of its peculiarconstruction and shape a certain-sized tool may always be employed forforming the upset or head on the end thereof, which latter, as beforestated, will always contain a definite and certain amount of stock, eventhough the rivet be having a Washer or other article secured thereon,one end of said shank being formed into ahead or upset containing acertain and definite amount of stock, said shank having a secondshoulder formed thereon and of a size dependent -upon the thickness ofthe material through Which said rivet is passed.

3. A rivet constructed with a shank having a shoulder formed thereon, ahead or upset formed on the end of saidshank containing 'a certain anddefinite amount of material,

and a lower head or shoulder of a size dcpendent upon the thickness ofthe material through which said rivet is passed.

4. A rivet constructed with a tapering shank A, having a iiange B formedon one end thereof, and a shoulder a, as and for the IRVING G. PRATT.

Witnesses:

L. A. PLA'r'r, JAY H. HART.

